Sharing a bottle of wine over dinner with your guy can be a romantic way to mark a special night. But, if you're the only one who wants to pop a bottle every now and then, well, your relationship might be headed for trouble.

According to new research by the Norwegian Institute of Public Health, couples who both had moderate alcohol habits were far less likely to split than those in which one was a heavy drinker. In fact, after looking at 20,000 married couples, the highest divorce rate—over 25 percent—was between couples where the husband was a light-drinker and the wife drank a lot more. Researchers say that this, in part, may have something to do with the fact that there's a bit of a double-standard at work here: Women who drink too much typically look unladylike in their husbands' eyes, while guys who overindulge are more likely to be excused by their wives. Which is kinda lame.

But, I actually have a bit of personal experience with this sort of thing, which makes me think this research is pretty legit: I once dated a guy in college who didn't drink. While he didn't make me feel guilty every time I ordered a glass of wine with dinner, he'd do other things like refuse to dance with me if I had a beer in my hand (which, okay, yeah, he didn't want me to spill on him, but come on). Eventually, I became super self-conscious every time I felt like having a drink, which wasn't so great for our relationship. While the alcohol issue wasn't what broke us up in the end, the way he reacted to me drinking every now and then was definitely a red flag for other issues to come.

So, from my perspective—and given this new research—it's pretty important to make sure your drinking habits line up when you're dating. While it might not seem like a big deal, how, when, and why you drink can actually have an impact on your day-to-day relationship.